396 vrs 454 pros and cons
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396 vrs 454 pros and cons

  1. #1
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    Default 396 vrs 454 pros and cons

    Ok im in the market for a motor and im comin up with alot of great 396 candidates. not so many 454 motors. Can someone tell me the pros and cons for the 396 vrs the 454. Im havin a hard time pullin the trigger on the 396 but im close. im findin 350/375 hp 396s all day long


    thanks,
    Casey

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    Senior Member 2savage4you's Avatar
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    Just remember there is no replacement for discplacement....... That being said i had a 396 i was going to build, now i have a 454 and i am probably going to stroke it........

    Its never big enuff!!

    2sav

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    Im thinkin thats a wivestale.NO SUB for cubic inches.
    58Cubic inches is gonna make that much a difference?
    Most of the 396 i can find compared to the 454 available are way more HP then the 454. 270HP 454 vrs 375HP 396's

    dont make sense. Im lookin for more technical info like bore and stroke dif and what that means in the boat.Like one revs more then the other or ?

    Casey

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    How much are you looking to spend? I would rather run a 383 small block than a 396 big block. I also find it hard to believe you can't find a 454 that make more than 270hp for a decent price.

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    still lookin for the pros and the cons.
    I apreciate your input ..but id rather put a 383 small block then a 396 isnt what i was lookin for unless you can tell me why you would do that. that would be more helpful.

    most of the 454s available in my area are out of 80-90s trucks or suburbans which are low HP motors(Smog Blocks).anything good in 454 with decent HP is comin with $2,500-$4k price tags.

    these 396's are $500-$1500 tags low miles to Totally rebuilt

    anyone have some pros and cons?

    Casey

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    Renegade jet tunneljet's Avatar
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    First and foremost if money is very limited look at a motor that will work with all the accessories you have in your boat already. The reason I said a 383 small block is for weight savings only if you are considering a small displacement engine. They also easily can make over 400 hp and are very affordable. I however would go with the largest displacement engine possible if it were my boat. Reason being is everyone want to go faster eventually and the bigger the motor the more horsepower and torque can be made all things being equal. Take the same heads, cam, compression ratio, etc. on a 454 will make more power than they did on a 396. That being said I would look for a 454 stroker (496) will make even more power and torque, they also generally cost just a few buck more than a std. rebuilt 454.

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    alrigtht cool info. I had a Olds that went south. we aint goin back to that POS. comin over to the dark side!

    Casey

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    Renegade jet tunneljet's Avatar
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    Also check other boat sites for engines for sale. Screamandfly.com has a couple listed cheap. Hotboat.com is also a good place to check. Good luck.

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    454 and 396 are both big block engines, roughly the same weight. The 454 has a larger bore and a longer stroke - therefore the 454 has more displacement for roughly the same weight.

    Lets say you are making 1 hp per cubic inch, then you would have 58 more hp for the same weight, without doing anything exotic.


    Think about the reason you can get the 396 cheaper, fewer people want them because there is less horsepower potential.

    Are you planning to just drop the engine in the boat or re do the whole thing? If you put together the right pistons, heads/valves and camshaft you could easily make a 500 hp with that truck 454. Do the same build on the 396 and you are still down 58 cubes times the hp per cubic inch. For an equal build the 454 will always make more power.

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    Senior Member 2savage4you's Avatar
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    Just like i said before.............No replacement for discplacement......Ive been going down this road for over a year now..... I started when the Olds blew up..

    Good luck in your engine build/buy or whatever.......

    2sav

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    Senior Member jetboatperformance's Avatar
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    396 Block .060 over,454 crank= 434 cu (requires serious balancing and special pistons ) turns a AA Impeller 5100rpms 18' boat, 80 mph
    Last edited by jetboatperformance; 05-27-2008 at 08:40 PM.

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    buy a 396. pull it up beside someone`s 454. you`ll see the difference real quick.

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    TEN THIRTY ONE RCB19's Avatar
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    Quote Originally Posted by Richard Till View Post
    buy a 396. pull it up beside someone`s 454. you`ll see the difference real quick.
    Now that's a great way to gauge the outcome.
    RCB

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    Senior Member W.O.T's Avatar
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    just buy a good 454, i wouldn't even consider a 396. if you have to be patient and find what your looking for.

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